Calendar-Based Power Reserve

1. A mobile communications device, comprising: a computer processor; and a power reserve application executable by the computer processor, the power reserve application configured to implement a method, the method comprising: identifying a new calendar entry scheduled into a calendar application of the mobile communications device, the new calendar entry specifying a telephone call; and upon determining a priority indicator has been set for the new calendar entry in the calendar application: directing a power management component of the mobile communications device to reserve an amount of power for the telephone call; and updating a battery power indicator that is displayed on the mobile communications device to reflect a capacity of a battery of the mobile communications device, the capacity reflecting a current amount of available power for the battery minus the amount of power to reserve; wherein the power reserve application is further configured to implement: monitoring calendar entries scheduled into the calendar application, the calendar entries indicative of telephone calls at least one of which has a corresponding priority indicator set; and upon determining a current time is within a threshold period of time associated with one of the calendar entries having the priority indicator set, releasing reserved power for the one of the calendar entries, and updating the battery power indicator to reflect the reserved power released for the one of the calendar entries.

2. The mobile communications device of claim 1 , wherein the power reserve application is further configured to implement: prompting a user of the mobile communications device to select the priority indicator responsive to the identifying the new calendar entry.

3. The mobile communications device of claim 1 , wherein the identifying a new calendar entry includes identifying a date and duration of the telephone call from inputs received from a user of the mobile communications device via the calendar application, the mobile communications device further comprising: calculating the amount of power to reserve, the calculating being a function of the duration of the telephone call.

4. The mobile communications device of claim 1 , wherein the directing a power management component of the mobile communications device to reserve an amount of power for the telephone call includes directing the power management component to physically partition storage in the battery and relocate the reserved amount of power to a partition defined for holding reserved power.

5. The mobile communications device of claim 1 , wherein the directing a power management component of the mobile communications device to reserve an amount of power for the telephone call includes directing the power management component to update the battery power indicator on the mobile communications device to reflect a decrease in the capacity without relocating the reserved power to a different storage location.